From: Mark Brown <broonie@kernel.org>
To: Lee Jones <lee.jones@linaro.org>, Samuel Ortiz <sameo@linux.intel.com>
Cc: linux-kernel@vger.kernel.org,
patches@opensource.wolfsonmicro.com,
linaro-kernel@lists.linaro.org, Mark Brown <broonie@linaro.org>
Subject: [PATCH] mfd: wm5102: Mark register write sequencer control 3 readable
Date: Mon, 10 Mar 2014 17:42:14 +0000 [thread overview]
Message-ID: <1394473334-22049-1-git-send-email-broonie@kernel.org> (raw)
From: Mark Brown <broonie@linaro.org>
During init the core checks if the wm5102 has finished starting by reading
register 0x19 and looking at the value. This read always fails since this
is not a readable register, mark it as being one. While we're at it provide
a constant for the register name (as supplied by Charles Keepax).
Signed-off-by: Mark Brown <broonie@linaro.org>
---
drivers/mfd/arizona-core.c | 3 ++-
drivers/mfd/wm5102-tables.c | 1 +
include/linux/mfd/arizona/registers.h | 1 +
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 1c3ae57082ed..d4919fa2797a 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -745,7 +745,8 @@ int arizona_dev_init(struct arizona *arizona)
/* Ensure device startup is complete */
switch (arizona->type) {
case WM5102:
- ret = regmap_read(arizona->regmap, 0x19, &val);
+ ret = regmap_read(arizona->regmap,
+ ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
if (ret != 0)
dev_err(dev,
"Failed to check write sequencer state: %d\n",
diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c
index f4668d39e542..e32736c3ab57 100644
--- a/drivers/mfd/wm5102-tables.c
+++ b/drivers/mfd/wm5102-tables.c
@@ -1016,6 +1016,7 @@ static bool wm5102_readable_register(struct device *dev, unsigned int reg)
case ARIZONA_WRITE_SEQUENCER_CTRL_0:
case ARIZONA_WRITE_SEQUENCER_CTRL_1:
case ARIZONA_WRITE_SEQUENCER_CTRL_2:
+ case ARIZONA_WRITE_SEQUENCER_CTRL_3:
case ARIZONA_WRITE_SEQUENCER_PROM:
case ARIZONA_TONE_GENERATOR_1:
case ARIZONA_TONE_GENERATOR_2:
diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h
index 90d57aec34e7..f6ad81e923ac 100644
--- a/include/linux/mfd/arizona/registers.h
+++ b/include/linux/mfd/arizona/registers.h
@@ -27,6 +27,7 @@
#define ARIZONA_WRITE_SEQUENCER_CTRL_0 0x16
#define ARIZONA_WRITE_SEQUENCER_CTRL_1 0x17
#define ARIZONA_WRITE_SEQUENCER_CTRL_2 0x18
+#define ARIZONA_WRITE_SEQUENCER_CTRL_3 0x19
#define ARIZONA_WRITE_SEQUENCER_PROM 0x1A
#define ARIZONA_TONE_GENERATOR_1 0x20
#define ARIZONA_TONE_GENERATOR_2 0x21
--
1.9.0
next reply other threads:[~2014-03-10 17:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-10 17:42 Mark Brown [this message]
2014-03-10 18:13 ` [PATCH] mfd: wm5102: Mark register write sequencer control 3 readable Lee Jones
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